CN1600390A - Inert gases release type fireproof material and extinguishing material in high gluey solid and preparation method - Google Patents

Abstract

A high-gelatinization fire preventing-extinguishing material able to release inertial CO2 gas is prepared from water, high-molecular polymer, carbonate, metallic oxide and porous silicon oxide.

Description

High-glue-solid inert gas release type fire preventing and extinguishing material and preparation method thereof

The technical field is as follows:

the invention relates to a fire prevention and extinguishing material, in particular to a high-glue-solid inert gas release type fire prevention and extinguishing material which can be widely applied to fire prevention and extinguishing on the ground, mines and tunnels.

Background art:

the progress of human beings cannot utilize the fire, but the fire brings disasters to people. The fire disaster is rapidly destroyed, and particularly, the resource loss and the casualties caused by the influence of special production ventilation environment of mine tunnels are larger.

The conventional methods for extinguishing open ground fire in the prior art include: dry carbon dioxide, carbon tetrachloride, sprayed yellow sand, etc. In general, the fire area is mostly sealed for open fire in mines and fire hazard that coal or combustible substances are highly oxidized and positioned at the fire-out edge, and water, yellow mud, cement paste or coal-powder mortar and gel (fertilizer and water glass) are injected into the fire-out point to treat the fire. However, the leakage is easy to occur when the sealed filling water is arranged; the yellow slurry, cement slurry and ash coal slurry are injected into the fire area, and the heat evaporating material in the fire area is easy to dry and shrink due to the limited water carrying capacity of the colloid. Meanwhile, water injection, yellow mud, cement paste or fly ash mortar are required to prevent and extinguish fire, so that the grout is required to be well horizontally diffused and is required to be stacked in the vertical direction, the grout injection amount in a fire area is large, and the fire extinguishing speed is low; meanwhile, the leakage and the shrinkage of the material reduce the blockage of the fire area, secondary reburning of the fire area is caused, the blocking effect is difficult to control, and a large amount of leakage and accumulation of slurry form prominent potential safety hazards. Gel (chemical fertilizer and water glass) is injected, although the gel has quick flexibility, ammonia gas is continuously released in the material gelling process and after solidification, and the plugging effect is easy to attenuate and is difficult to last; the released ammonia gas is connected in series to spread polluted air flow under the special ventilation condition of the mine, which is not beneficial to production and personal safety.

The invention content is as follows:

the technical problem to be solved by the invention is to avoid the problems in the prior art and provide a high-glue-solid inert gas release type fire prevention and extinguishing material which has good ground environment adaptability, high-temperature stability and nontoxicity under the special conditions of a mine tunnel and can generate carbon dioxide inert gas to cover a fire area and insulate oxygen to prevent and extinguish fire.

The technical scheme adopted by the invention for solving the technical problem is as follows:

the invention is characterized in that the material composition according to the weight portion is as follows:

80-90 parts of water,

1-20 parts of a polymer compound,

20-50 parts of carbonate,

1-30 parts of metal oxide,

10-50 parts of porous silicon oxide.

Compared with the prior art, the invention has the beneficial effects that:

the water solution dissolved with the inert gas product is glued and fixed in high-power parts (200-1000 times) through the polymer compound, and the temperature of the environment and the combustion objects in a fire area is reduced by using water molecules loaded in the glue and fixed in the fire area and a fire oxidation high-temperature area; the heat generated in fire area is used to realize the physical and chemical reaction of the product of cementing inert gas and release CO₂Reach fire area oxygen driving inert gas covering fire prevention and extinguishing, prevent the fire prevention and extinguishing only by moisture from producing a water gas reaction ) The risk of explosion. Meanwhile, the material is utilized to complete the three-dimensional stretching, adsorption and wrapping of the comburent in the fire area by utilizing the good horizontal diffusion and vertical accumulation characteristics of the material in the fire area, so that the good fire area plugging is formed. The material can be pumped and injected, can be sprayed, has good quick operation flexibility, can quickly form slurry and glue solids with small material addition amount, can keep a flowing or semi-flowing state for a long time, and has excellent secondary fluid infusion recoverability.

The specific implementation mode is as follows:

in the embodiment, the material composition by weight portion is:

80-90 parts of water,

1-20 parts of a polymer compound,

20-50 parts of carbonate,

1-30 parts of metal oxide,

10-50 parts of porous silicon oxide.

The specific formulation can be shown in the following table

Sequence of steps Number (C)	Water (W)	Starch grafting Acrylonitrile series	Polypropylene Sodium salt	Carbonic acid Sodium salt	Carbonic acid Sodium hydrogen carbonate	Oxide of two carbon atoms Iron	Magnesium oxide	Oxidation of oxygen Two aluminium	Silicon dioxide (porous)
										1	80	15	0	0	35	7.5-10	7.5-10	7.5-10	10-15
2	80	15	0	35	0	7.5-10	7.5-10	7.5-10	10-15
										3	80	0	15	0	35	7.5-10	7.5-10	7.5-10	10-15
4	80	0	15	35	0	7.5-10	7.5-10	7.5-10	10-15
										5	80	7.5	7.5	0	35	7.5-10	7.5-10	7.5-10	10-15
6	80	7.5	7.5	35	0	7.5-10	7.5-10	7.5-10	10-15
										7	90	0	7.5	35	0	7.5-10	7.5-10	7.5-10	10-15
8	90	7.5	0	35	0	7.5-10	7.5-10	7.5-10	10-15

The materials of the formulas of the groups 1, 2, 3, 4, 5 and 6 in the table are particularly suitable for horizontal diffusion and vertical accumulation plugging of fire zones and CO₂And (5) covering with inert gas.

The materials of the formulas in the groups 7 and 8 are especially suitable for horizontal diffusion plugging of fire zones and CO₂And (5) covering with inert gas.

In the above formulation:

the water is not only a fire extinguishing and cooling material in a fire area, but also a solvent for generating substance carbonate by inert gas.

The polymeric high molecular material is the main substance forming the gelled inert gas generator, and can be starch grafted acrylonitrile, sodium polyacrylate or the mixture of the starch grafted acrylonitrile and the sodium polyacrylate.

Carbonate is the generation of inert gas (CO)₂) Substance (b) is in particular sodium carbonate Na₂CO₃Sodium bicarbonate NaHCO₃Or mixtures thereof, of the formula:

the metal oxide has flame retarding and temperature lowering effects, and can be selected from ferric oxide Fe₂O₃Or manganese oxide MgO or aluminum oxide Al₂O₃Or mixtures thereof.

The silicon oxide is porous silicon dioxide SiO₂It is used as a stacking skeleton.

The preparation method comprises the following steps:

a. drying and mixing a polymer material, a metal oxide and silicon oxide for later use;

b. adding carbonate into a container filled with water, and stirring until the carbonate is completely dissolved for later use;

c. and c, dissolving the product obtained in the step a into the solution obtained in the step b.

When the material is used specifically, the material can be pumped for injection or sprayed, the operation flexibility is good, the material can be quickly formed into slurry and cemented by a small addition amount, the flowing or semi-flowing state can be kept for a long time, and the material has excellent secondary fluid infusion recoverability.

Claims (6)

1. The high-glue solid inert gas release type fire prevention and extinguishing material is characterized by comprising the following materials in parts by weight:

80-90 parts of water,

1-20 parts of a polymer compound,

20-50 parts of carbonate,

1-30 parts of metal oxide,

10-50 parts of porous silicon oxide.

2. The high-solidity inert gas releasing fire preventing and extinguishing material as recited in claim 1, wherein said polymeric high molecular material is starch grafted acrylonitrile, sodium polyacrylate, or their mixture.

3. The high-conglutination inert gas release type fire prevention and extinguishing material as claimed in claim 1, wherein said carbonate is sodium carbonate Na₂CO₃Sodium bicarbonate NaHCO₃Or mixtures thereof.

4. The high-conglutination inert gas release type fire prevention and extinguishing material as claimed in claim 1, wherein the metal oxide is selected from iron oxide Fe₂O₃Or magnesium oxide MgO or aluminum oxide Al₂O₃Or mixtures thereof.

5. The high-conglutination inert gas release type fire prevention and extinguishing material as claimed in claim 1, wherein the silicon oxide is porous silica SiO₂。

6. A method for preparing the high-conglutination inert gas release type fire preventing and extinguishing material as defined in claim 1, which is characterized in that:

a. drying and mixing a polymer material, a metal oxide and porous silicon oxide for later use;

b. adding carbonate into a container containing water, and stirring until the carbonate is completely dissolved for later use;

c. and c, dissolving the product obtained in the step a into the solution obtained in the step b.